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Flow Chart of Troubleshooting
10-27
10-9. Back Light (for Color Main LCD)
Back light does not work
Yes
Set LCD Contrast on high level
Is LCD Contrast set on high
level in the Menu?
No
Yes
No
Check the U707 or replace U707
HDC801 pin 16,18,20 = 3.8V?
Yes
HDC801 pin 30(CS), 24
(Clcok), 22(RST) is OK?
No
Check the UCP901
Yes
Replace the LCD Module
Yes
END
Summary of Contents for SGH-I740c
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